JIMS, Powerglide Steady Roll tappet. +.005" O.D. - 99-17(NU)Twin Cam; 17-21 M8; 00-21 XL; 08-12(NU)XR1200; 00-10(NU)Buell XB 939605 Comes self adjusting deflective disc

Comes self adjusting deflective disc dampening and the latest Aramid Fiber air spring technology to maximize travel and provide full adjustable ride height at the same time

This provides more power

lower amp draw

Machined from the solid block

Shell: Canvas

JIMS, Powerglide Steady Roll tappet. +.005" O.D. - 99-17(NU)Twin Cam; 17-21 M8; 00-21 XL; 08-12(NU)XR1200; 00-10(NU)Buell XB 939605 Comes self adjusting deflective discThis is the Powerglide with a failsafe solid bronze alloy bushing instead of a regular roller bearing. No other differences excist between the regular Powerglide and the Powerglide Steady Roll tappets. Full bearing contact provides more stability, longer life and quieter operation due to the tighter tolerances this bushing design allows. The major drawback of a worn needle bearing roller is they will eventually break, spilling steel needles throughout